Quadratic Equation

Problem Statement

Given real numbers a, b, c, find all solutions of the quadratic equation ax² + bx + c = 0.

Input

Three real numbers are given, with a ≠ 0.

Output

Output two real numbers in any order if there are two roots; one real number if there is one root. Output nothing if there are no real roots.

Example

[{'input': '1\n0\n0', 'output': '0'}]